泥沙输移比影响因子及其关系模型 研究现状与评述

泥沙输移比是目前预测流域产沙量的一种较实用的方法，本文介绍了国内外泥沙输移比研究的主要成果。分析并总结了泥沙输移比与流域面积、降雨／径流、地质地貌及泥沙颗粒因子之间的影响关系及其关系模型。最后，结合我国泥沙输移比研究的实际情况，提出了我国今后一定时期内在泥沙输移比研究方面的发展设想。

On the Factors and Prediction Models of SDR

Sediment delivery ratio is one of the sediment yield predicting methods, which is wildely used in the world now. In this paper, main research achievements in sediment delivery ratio are summarized. The relationships between sediment delivery ratio and the influencing factors such as drainage area, rainfall/runoff, sediment particle size, geology and physiognomy are analyzed, and the research progress in sediment delivery ratio predicting models is analyzed too. Although some excellent results have been gained, on the whole, most of the sediment deliveryratio models are qualitative or semi-quantitative, and there are different viewpoints on the sediment delivery ratio model building. So the research on the sediment delivery ratio is still immature now. According to the practical situation of the sediment delivery ratio research in China, some tentative plans are proposed in this paper. First, more influencing factors should be explored because sediment delivery ratio model building for the sediment delivery ratio can been influenced by several factors and in different time and space the main influencing factors are different. Second, to promote the application range of the sediment delivery ratio model, the physical process of sediment delivery in slope and in riverway should been profoundly studied. Finally, the sediment delivery ratio has only been researched in Yangtse Rive Basin and Yellow River Basin in China, other important rivers in China still need to be studied in future.